Home / 11,165.76-15,410.12-6,387.44

Finding the Fourth Proportional to 11,165.76, 15,410.12 and 6,387.44

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Solution

The fourth proportional to 11,165.76, 15,410.12 and 6,387.44 is: 8,815.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.76 : 15,410.12 = 6,387.44 : x
  2. Step 2: Convert to fraction form
    11,165.76/15,410.12 = 6,387.44/x
  3. Step 3: Cross multiply
    11,165.76x = 15,410.12 × 6,387.44
  4. Step 4: Simplify right side
    11,165.76x = 98,431,107.91
  5. Step 5: Solve for x
    x = 98,431,107.91/11,165.76
  6. Step 6: Final answer
    x = 8,815.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.